Fireplace construction



Oct. 5, 1943. L. L. DOLLINGER I FIRE PLACECONSTRUCTION Filed Magch 20 1940 2 Sheets-Sheet 1 56 Iv. My wmm me E \Wg M FIGI Oct. 5, 1943.

L. L. DOLLINGER FIRE PLACE CONSTRUCTION 2 Sheets-sheaf: 2

m VENTOR LE /s L DDLLINGER ATTOR Filed March 2Q, 1940 Patented 0a. 5, 1943 ave; inexpensive ''eii's'triictidh ir a never or distributin ob ect 6r th nv'nti'oni's be These and other objects and attendant advan tages of the invention will become more readily apparent from the detailed description thereof which follows, reference being had to the accompanying drawings in which H Figure 1 is a vertical sectional view-of the fire place taken on the line l| of Figure}.

n [e l a -Ta m fireplace and its heat radiatin'gmeans.

cr s-meshes Figure 2 is a vertical sectionalview ofthe f re place taken on the line 2-2 of Figural. r

The fire place construction and heat distributing system forming the subject matter of my present invention is'adapted to eflicientlydistrib ute practically all heat generated by the fire place and thus prevent the loss of heat thru the chimney. Furthermore the distribution of the heat frolm i the fire place, issuch that all 'parts-of the roo'm will be heatedgby the circulation, of the heated air thru the ceiling and wallsofthe room,

, As illustrated in the several figures, the

place comprise the combustion chamber] with the jambs 2,2 on each side and the back wall 3 V at the rear thereof. A grate 4- or other suitable fuel support is placed over, the hearth to provide sufdcient draft for an eliicientcombustion of the fuel. I

Between the lambs 2, 2 and outer walls 5,533,16

provided the vertical ducts 6,6 which havethe inlet I at the bottom thereof so that air isadapted to enter from the room to be heated by'the fire place and then room. y V I I I On top of the-fire place between the jambs Z, 2

be re-circulated back into the is formed the heating chamber IA and in it are supported the plates 8 and 10 with the'flues 9 between them. On the plate 8 at the bottom of the dues 9 are provided a pair ofheaders H, H

which connect the open-bottom ends of a predetermined equal number of fines on each side'of the header. The fines in the middle of the plates- 8' and I0 thus carry off the products of combustion from the fire place into the header [2 located above the upper plate l0. From: this each end f the duo l. l a a n w v a numb r or nuts in ito the hea'fder' again rise up thru another series oflflu esl The fan l4, when operating, creates a partial vacuum in the duct l3 which causes the swinging doors lfi in the middle'ofthe header l2 to be held in a horizontal position in which all of the products of combustion passing thru -the:p1ate l0 aredirected thru the chamber for circulation thru the fines 9A and 9B into theaduct 13. With I thefan I4 inoperative, the swinging doors 16 drop and open the top of the header l2, into the duct [3 in order that the products of combustion ,f maypass directly from the header l2 into the ,duct'l3 and thru the fan casing into the chimney; A I

7 created by lthe operation of the fan causes the'products ofcombustio'n to travel thru-all of the ,fiu'es 9,s9A' andg;

7 9B to efiicie'ntly radiate substantiallyall of their, 7

' heat for absorption by the air which circulates around them, whereas the natural draftprovided bythechimney without theaid of the fan causes [the products of combustion to pass thru but-a In this 'way the forced draft portionof the lines with a corresponding reduction intheradiation of the heat of the productsj a of combustion. Heat from the fire place "may thus be: regulated by'the use or nonuse of the Air is admitted from the room for Jcirculation around the dues thru the openings IT," 11} I in the front wall of the fire place structure below" I the mantel l8; thereof and a screened'opening le in the wallabove the mantel |8- providesffor' the escape of'the air back into the room has been heated by the fines."

combustion is desired forheating-therdom. 1A

as an -x f er t The naturalfcire culation of air for heating purposes issufiicient, when but a portion of the heat of theproducts of the floor of the room into the vertical ducts for circulation around the flues 9, 9A and 93 where it is efiiciently heated and then driven into the space 2| between the ceiling 22 and the rafters 23, and the space 24 between the inner wall 25 and the outer wall 26. V

The ceiling 22 is made up of panels of burlap or other suitable porous or perforate material which will ofier but little resistance to the passage of air therethru. The heated air forced into the space 2| above the ceiling thus readily enters the room thru the ceiling to displace the cooler air in the room above. The heated air, which is forced into the space 24 between the walls, is forced into the room at the bottom of the inner wall 25 thru the screened opening 21 which extends along the fioor of the room. The fact that the heated air is admitted over a large area thru the ceiling and around the bottom of the walls eliminates practically any draft which isso objectionable in other forced draft circulation systems.

I claim:

1. In a fireplace construction having a combustion chamber and an air heating chamber above said combustion chamber, a header between said combustion chamber and said air heating chamber, a pair of connecting chambers spacedly arranged in said header, a series of flues extending upwardly thru said header and airheating chamber between said connecting chambers, a header structure at the top of said air heating chamber comprising a plate having said series of flues extending therethru, a second series of flues extending downwardly thru said header plate to said connecting chambers in the header at the bottom of said air heating chamher, a chamber connecting said first series of flues with said second series of flues above said header plate at the top of said air heating chamher, a third series of flues extending upwardly from said connecting chambers in the header at the bottom of said air heating chamber thru the header plate at the top of said air heating chamher, a duct above said connecting chamber at the top of said air heating chamber and into which the flues of said third series discharge, and door means for connecting said last mentioned duct directly with said connecting chamber located above the header at the top of said heating chamber.

2. A fireplace construction as set forth in claim 1 including means for operating said door means to, cause the products of combustion from said first seriestof flues to pass thru said last mentioned chamber directly into said duct, and means for exhausting the products of combustion from said duct.

3. A fireplace construction as set forth in claim 1 in which said door means opens downwardly by gravity including an outlet pipe connected to said duct above said door means, an exhaust fan in said outlet pipe operating to create a. partial vacuum in said duct to exhaust products of .combustion and keep said door means closed on the operation of said fan.

LEWIS L. DOLLINGER. 

